LPC55S36 I3C SCL isn't completed during Hot Join

sam_wu_7911

Hi there,

I'm trying to implement the flow of hotjoin with the I3C bus. However, when the target triggers the hot join address (0x02), the SCL stop at the 8th clock tick. No clock for R/W and ACK, do you have any idea?

Harry_Zhang

Hi @sam_wu_7911

May i ask is your target also lpc55s36 board?

BR

Harry

sam_wu_7911

Hi @Harry_Zhang

Yes, I did try the target of the LPC55S36 board.

Also, I tried another sensor IC with the same situation.

Could you please provide me with a solution for triggering the last two clock ticks? I'll appreciate it.

Harry_Zhang

Hi @sam_wu_7911

When you enter Hot join,

You can try to send response ACK.

I3C_MasterEmitIBIResponse(EXAMPLE_MASTER, kI3C_IbiRespAck);

And then dynamically assigning addresses.

BR

Harry

sam_wu_7911

Hi @Harry_Zhang

Do you mean when the Controller received the Hot Join Interrupt, sending a response ACK?

Is it like the code below?

BRs,

Sam

Harry_Zhang

Hi @sam_wu_7911

Yes, you are right. and then dynamically assigning addresses. you can try.

BR

Harry